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2988 Korhonen (1943 EM)
Classification: Main-belt Asteroid          SPK-ID: 2002988
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1233375125965335 6.1579e-08  
a 2.60841218170948 1.9252e-08 AU
q 2.286697111390935 1.5885e-07 AU
i 14.73172909424946 6.8431e-06 deg
node 100.9167139019205 2.3791e-05 deg
peri 133.4943471120466 3.3316e-05 deg
M 308.073792593548 2.3169e-05 deg
tp 2457222.445763405749
(2015-Jul-18.94576341)
9.9282e-05 JED
period 1538.731188292825
4.21
1.7036e-05
4.664e-08
d
yr
n .2339589934479777 2.5903e-09 deg/d
Q 2.930127252028024 2.1627e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      910  
   data-arc span      30235 days (82.78 yr)  
   first obs. used      1931-05-19  
   last obs. used      2014-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5165  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:24:00  

Additional Information
 Earth MOID = 1.2988 AU 
 T_jup = 3.354 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.7 mag n/a PDS3 (MPC 17267)  
rotation period rot_per 29.494 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Gross, J. (2003) Minor Planet Bul. 30, 44-46.]
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2988 Korhonen (1943 EM)          Discovered 1943-Mar-01 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1943 EM = 1931 KN = 1951 AS = 1953 TO3 = 1979 WM3 = 1979 YV6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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